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Compiler Error C3382

'sizeof' is not supported with /clr:safe

The output file of a /clr:safe compilation is a file that is verifiably type safe, and sizeof is not supported because the return value of the sizeof operator is size_t, whose size varies depending on the operating system.

For more information, see,

Example

The following sample generates C3382.

// C3382.cpp
// compile with: /clr:safe
int main() {
   sizeof( char );   // C3382
}